Check if an element includes a certain class with "matches"
Written by Stefan Judis
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- 1min
This post is part of my Today I learned series in which I share all my web development learnings.
A common operation when building interfaces is to figure out if an element contains a particular class. Today I learned about Element. The element method can be used to check if an element includes a certain class and is way shorter than element. 🎉
const elem = document.querySelector('.foo');
elem.classList.contains('bar'); // true
elem.matches('.bar'); // true
It turns out matches can also deal with a selector that includes multiple classes. elem returns true for elements with the class
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Yes? Cool! You might want to check out Web Weekly for more quick learnings. The last edition went out 12 days ago.
Yes? Cool! You might want to check out Web Weekly for more quick learnings. The last edition went out 12 days ago.
Frontend nerd with over ten years of experience, freelance dev, "Today I Learned" blogger, conference speaker, and Open Source maintainer.